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' S. B. MINNIGH.

ROTARY BLOWER.

Patented Dec. 22 1896.

V No. 573,609.

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No. 573,609. Patented Dec. 22, 1896.

I no? n UNITED STATES PATENT OFFICE.

SIMON B. MINNIOH, OF LANDISVILLE, PENNSYLVANIA, ASSIGNOR TO MARY C. MINNICH, OF SAME PLACE.

ROTARY BLOWER.

SPECIFICATION forming part of Letters Patent No. 573,609, dated December 22, 1896. Application filed August a, 1892. Serial No. 442.021. mom a'em To aZZ whom it may concern: curved arms, as wellas the forward endsof Be it known that I, SIMON B. MINNICH, of the eccentric-rods, are made flexible or bend- Landisville, in the county of Lancaster and ing and rigidly affixed or secured in place. State of Pennsylvania, have invented certain In the drawings, A designates any suitable 5 new and useful Improvements in a Rotary frame, resting on legs a and adapted to sup- Pump or Engine; and I do hereby declare port the elements of the invention now to be the following to be a full, clear, and exact dedescribed. ,scription of the invention, such as will enable B designates a case or shell, being in form others skilled in the art to which it appera circular dish, having a peripheral wall b 1o tains to make and use the same. rising perpendicularly from the edge, integral This invention relates toamechanical movetherewith, a circular disk or body I), forming ment of that class in which a circular or cythe'back or bottom of said shell or dish. lindrical rim having arms or wings pivoted From the outside of the back Z), as well as thereto and movable out and in through from the outside of the wall 1), project, at pre- 1 5 transverse slots in its peripheral wall is made scribed points, lugs B, B and B adapted to to revolve eccentrically within a stationary rest on the frame A and to be secured thereto or fixed rim having a greater diameter, so by screws or bolts b as shown. At the centhat the convex face of the revolving rim will ter, on each side of the back Z), are boss-proconstantly be in close contact at a given point jections B having an axial bore b to form a 20 with the concaved face of the stationary rim, bearing in which to journal one end of the while the outer ends of said arms will ride main or driving shaft, to be hereinafter decontinually against the concaved face of said scribed. The inner or concaved face of the stationary rim. wall I) is turned off or smoothly finished, adapt- The obj eot of the invention is the reduction ing it to receive, closely fitting, the outside 2 5 of friction or wearing points to a minimum surface or convex face of the revolving rim,

in a mechanical movement to be used in the yet to be described.

construction of rotary pressure-blowers, ex- B designates a circular recess formed cirhaust-fans, rotary pumps, rotary engines, and cumferentially 1n the wall I), having a greater excavators. diameter and havmg one point of itsinner 0 The purposes of the invention are attained concaved face flush or tangent with the conby the mechanism illustrated in the accomcaved face of said wall Z), as at 11 and its panying drawings, in which similar letters regreatest depth at the opposite end of the difer to similar parts throughout the several ameter starting from said point, and having views, and in whichbeen turned out or finished on the inside is 3 5 Figure 1 is a longitudinal vertical section, adapted to have moving therein, closely fitpractically on the line y y y in Fig. 2, of a ting and filling the same, the pivoted arms mechanical device embodyingthe elements of or wings yet to be described, and this recess this invention; Fig. 2, a sectional view from constitutes the stationary rim mentioned in the right of the portion, completed, which lies the opening paragraph. Against the open 4o practically to the left of the line a: a: in Fig. 1; face of the case is fitted an annular plate B Fig. 3, a top view of Fig. 1, completed, but secured thereto by screws 11 and forming a the portion above the line 2 to the center in centrally-projecting flange, against which isv Fig. 1 removed; Fig. 4, a plan in elevation of adapted to bear the edge of the before-menthe central eccentric strap and rod detached; tioned revolving rim placed within said case.

5 Fig. 5, end elevations of the three eccentric Near the point of tangency or coincidence I), straps and rods detached and shown in plan before mentioned, is a tubular projection B in Fig. 4; Fig. 6, a plan and elevation of an of the outer stationary case provided with an. eccentric strap and rod, both being adjustattaching-flange b about its upper end and able. Fig. 7 is a sectional elevation similar at its lower end with an opening into a port- 50 to Fig. 1, showing a modification of the deway on one side leading into the recess B as vice, in which the rear ends of the bars of the shown on the right in Figs. 1 and 3, while opposite, opening from the wider portion of said recess, is a larger tubular projection B provided at its extremity with an attachingflange b either of which openings may serve as inlet or outlet port according as the device is used as an engine or as a pressure-blower or'force-pump;

0 design ates a pillow-block or standard havin g its base secured to the frame A by bolts or screws a and having at its upper end a cylindrical block or body 0, having through its axis in line with the axial bore b before mentioned, a bore 0, constituting the bearing adapted to have journaled therein the other end of the driving-shaft before mentioned. To the inner end of this cylindrical block is attached a side of the required eccentric (3 having about the attached side an ontwardly-projecting rib or flange c to keep the eccentric-straps (yet to be described)-on this side confined to said eccentric, and on theother' side of the eccentric is a circular disk or follower-plate C secured by screws 0' to keep said eccentric-straps confined to the eccentric on this side,while the. shaft orifice or bearing 0' is extended through saidieccentric and follower.

Through the bearing-orifices b and C, before mentioned, is journaled themain or driving-shaftD, having secured thereto, between the bearing 1) andthe eccentric-follower C the hub of the revoluble rim yet to be described, and to one end of said shaft is secured a belt or driving-pulley D, while to its other end is secured a balance or fly wheel D to steady the motion of the operating device.

E designates the before-mentioned revoluble body having a cylindrical rim or peripheral wall 6 integral with and rising perpendicularly from the edge of a circular disk E, provided at its center with a hub a, secured to the main shaft by set-screws, one being shown at eZFig. 2, or by a key 6 seated in said shaft and hub, Figs. 1 and3. The convexsurface of this peripheral rim isturned off, smoothly finished, to fit closely as it revolves to the concaved face of the wall-Z), before mentioned, and has transversely through its body at prescribed intervals perforations or slots 6 adapted to have movable therethrough the curved ends of the pivoted arms or wings before mentioned, but yet to be described; and projecting in pairs from said wall are ears or lugs e each pair provided with a pivot-pin e adapting said pair to. have pivoted thereto the rearend of one of said arms or wings; while the forward edge of this revolving rim 0 is adapted to ride closely against the inwardly-projecting flange of the plate B before mentioned.

F designates an arm or wing comprisinga beam or bar f and a curved or bent portion f, the latter having its lower end secured to the forward end of said beam or bar, which has its rear endpivoted to a pair of the ears or lugs e by means of the pin-e having been passed through said ears and the said rear end, while near its forward end said beam or bar is provided with lugs or cars f provided with a pin f thus adapting said end to have pivoted thereto the outer end of an eccentricrod yet to be described. The curvature of the portion f is determined by radii taken from the pivot-center at c to the edges of the slot through which said portion passes, while its width extends from side to side of the recess 13*, before mentioned, and it is adapted to completely fill the variable area of said recess without rubbing or friction. Three such arms or wings are used in the present construction, but this number may be increased or diminished without departing from my invention. It will here be observed that the orifices-or slots in the rim through which the portions f move may be hushed, and the portions on their side and top edges provided with packing-strips to prevent leakage or to take up lost motion,-as is indicated by solid and dotted lines, respectively, at 1 and 2 in Fig. 7 1.

Eccentric-straps G, G, and G are applied to the eccentric C before' mentioned, and are. secured in position thereon by having the follower-plate G secured to the side of the eccentric by means of the screws 0 having been screwed home, while the rods 9,9, and g of said straps are so shaped or bent, Fig. 5, as to bring their extreme ends all in the same plane, and said ends, havingbeen provided with eyes g are pivoted to the ears or lugs f of the arms, by means of the pins f having been passed through said ears and eyes. In this instance the eccentric straps and rods are shown to be integral or made in one piece, but they may be made in parts so as to be adjustable, as shown in Fig; 6, where screws or bolts and nuts g and g are used to hold the respective parts together. In this case the screws 0 will be dispensed with, for the follower-plate and eccentric may be made in one piece.

In cases where a small eccentricity will'be required the eccentric rods, hereinbefore shown as having their outer ends pivoted to the bars of the curved arms, may be made flexible or bending and have said ends rigidly affixed to said bars, as by screws g and the bars themselves may be made flexible or bending at their rear ends and have said ends rigidly affixed, as by screws f, to the revoluble body E, instead of being pivoted thereto. (See Fig. 7

Now, the severalparts occupying the several positions indicated in thedrawings, an inspection'of Fig. 1 shows that, revolving the body E in either direction, the arms. F will practically remain in a relatively stationary positiomand the portions f will move out and in through the peripheral slots 6 Without pressure against theiredges and will completely-fill thetransverse area of the recess B without rubbing against its sides or con caved face; that, using the tube 13 to induct water, steam, or other agent under pressure, said agent, bearing against the wing portions f, will rotate the body E in the direction indicated by the arrow 3, and the device will be a rotary engine, the tube 13 being the exhaust-port; that, applying power to the pulley D to rotate the body E in the direction indicated by the arrow 4 and using the tube B as the inlet-port, the device will be a pressure blower or force pump, accordingly as air or water is inducted, the tube B being the outlet-port, and that, cutting away and removing the shell B to the circumferential edge of the revolving rim of the body E, placing it in a horizontal position with the lower end put forward and the projecting wings f used as shovels or scrapers, the device may be used as an excavator, the wings f clearing themselves from adhering particles of earth as they move backward through the orifices in the rim, the edges of said orifices acting as wipers.

I am aware that a patent, No. 147,623, was granted on February 17, 1874, to William I. Ellis for machinery for forcing and exhausting air, in which machinery peripheral surface fans or pistons are end-hinged to an inner cylinder and are made to oscillate through openings therein by means of radial rods connecting them with a crank-arm on a shaft which rotates said cylinder.

Having thus described the invention and set forth its operation and application, what I consider new, and desire to secure byLetters Patent, is-

The hereinbefore-described rotary pump or engine comprising the following instrumentalities: a revoluble body, having a cylindrical rim or circular peripheral wall; transverse slots, at prescribed intervals, through said wall; curved wings or arms, movable out and in, through said slots; beams or bars, having their forward ends rigidly secured to the inner ends of said curved arms, and their rear ends joined to said revoluble body, an eccentric, placed within the revoluble body, having its focus in the axis of revolution, and a side rigidly secured to a pillow-block fixed in position; a shaft-bearing secured to the upper end of said pillow-block, and extended through the focus of said eccentric; a main or driving shaft journaled in said bearing, and having securely attached thereto the center of the revoluble body; eccentric-straps, sleeved on the eccentric; and, eccentric-rods, having one end securely aflixed to said straps, and the other end joined to the bars of the curved wings, all substantially as described and for the purpose set forth.

In testimony whereof I have hereunto subscribed my name in the presence of two subscribing witnesses.

SIMON B. MINNIOH.

Witnesses:

EDWIN BOOKMYER, DANL. H. I-IERR. 

